Disc storage device



FIG. 1 is a front view of a “disc storage device” showing my design;

FIG. 2 is a rear view thereof;

FIG. 3 is a right side view thereof, the left side view being a mirror image;

FIG. 4 is a top view thereof, the bottom view being a mirror image; and;

FIG. 5 is a perspective view thereof.

The broken lines are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a “disc storage device,” as shown and described. 